Method for extracting land for teaching by using remote sensing image, relative elevation and geographic ontology
A technology of remote sensing images and geographic ontology, applied in the field of spatial information, can solve problems such as the inability to extract teaching land, achieve the effects of saving time and manpower, high precision, and broadening thinking
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[0023] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.
[0024] refer to figure 1 , the present embodiment uses remote sensing imagery, relative elevation and geographic ontology to extract the method for teaching land, comprising the following steps:
[0025] Step S1, use the rules to extract shadows from the vector map of the remote sensing image of the preset location (the preset location can be Hangzhou City, and use Yikang software to automatically segment the remote sensing image of the preset location-Hangzhou City, and the Hangzhou City can be obtained. The vector map of the remote sensing image; because the remote sensing image contains complex land types, the vector map obtained by automatically segmenting the remote sensing image indicates that the land type is also more complex, which can be roughly divided into shadows and buildings (buildings include two parts: ro...
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